Add Snapshot inputs

[ljones140]

Adding inputs required for DG autosubmission.

New Inputs:

• snapshot-sha
• snapshot-ref
• detector-name
• detector-version
• detector-url

All are optional.
If any Detector inputs are provided, all three must be provided.

Note

To keep consistency with the other actions I have uses - in the names snapshot-sha. For example see Go Action PR.

But this action uses camel case for other inputs such as detectorsFilters and detectorArgs
Happy to change if an issue, but thought we should keep consistency with the other actions.

Testing

Testing on a forked C# repo https://github.com/ljones140/vs-streamjsonrpc

When passing inputs:

{
  "detector": {
    "name": "Lewis Detector",
    "url": "http://www.example.com",
    "version": "1.1.1"
  },
....
  "sha": "53ebfbe5235cbb88a8edfdf55b57f2f1fae8df9d",
  "ref": "refs/heads/main"
}

When only one detector passed we receive error:

Part of: https://github.com/github/dependency-graph/issues/6451